We recently got an updated look at Berkshire Hathaway's (BRK.A 1.12%) (BRK.B 1.03%) stock portfolio, and unsurprisingly, Warren Buffett and his team sold several stocks in the fourth quarter. However, there was a significant amount of buying activity as well -- including one brand-new position.

*Stock prices used were the morning prices of Feb. 17, 2025. The video was published on Feb. 18, 2025.